Question

Suppose you had one mole of oxygen (O2). How many moles of hydrogen (H2) would react completely with the oxygen, and how many moles of H2O would be produced?

Answer 1

2H₂ + O₂ -------> 2H₂O

mole ratio of O₂ : H₂ = 1 : 2

since mole of O₂ = 1
then mole of H₂ = 1`* 2
= 2

since mole ratio of H₂ : H₂O = 2 : 2
then mole of H₂O = 2